Rotary flange plate concrete box beam and construction method thereof
A technology of concrete box girders and construction methods, applied in bridges, bridge parts, bridge construction, etc., can solve the problems of difficult control of flange plate quality and low efficiency, and achieve the effects of good construction quality, convenient construction, and good economic benefits
Active Publication Date: 2015-06-10
CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
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Problems solved by technology
[0004] The purpose of the present invention is to solve the above-mentioned deficiencies in the background technology, to provide a rotatable flange plate concrete box girder and its construction method, so that the box girder can be transported through the tunnel (obstacle ), avoiding the problems of low efficiency and difficult control of the quality of the flange plate caused by the post-casting construction of the box girder flange plate
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[0031] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0032] like Figure 1-4 As shown, the rotatable flange plate concrete box girder of the present invention comprises: beam body 11, flange plate 12 and hinge 2, hinge 2 comprises A leg 21 and B leg 22 hinged by hinge shaft 23, A leg 21 and B leg There are shaft holes 26 on the legs 22 for the hinge shafts 23 to pass through. There is also an inclined reinforcing leg 29 under the B leg 22. The A leg 21 is pre-embedded in the flange plate 12 along the transverse direction, and the B leg 22 is pre-embedded in the prefabricated In the beam body 11 , the reinforcing legs 29 are pre-embedded in the web 15 of the beam body 11 , and the reinforcing legs 29 increase the connection strength between the hinge 2 and the beam body 11 . The shaft holes 26 of the A leg 21 and the B leg 22 are respectively provided with two outer axial grooves 25, th...
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The invention discloses a rotary flange plate concrete box beam and a construction method thereof. The rotary flange plate concrete box beam is characterized by comprising a beam body, flange plates and hinges, wherein one end of each hinge is embedded in the corresponding flange plate in the lateral direction of the flange plate; the other end of the hinge is embedded in the beam body in the lateral direction of the box beam; the hinge further comprises a limiting device; when the flange plate is parallel with the beam body, the hinge is limited through the limiting device. The rotary flange plate concrete box beam connects the beam body and the flange plates through the connecting hinges, so as to form a rotary flange plate box beam structure, after the flange plates rotate, the width of the box beam is shortened, the box beam passes through a tunnel, the flange plates on two sides are unfolded, the box beam can smoothly passes through the tunnel, the rotary flange plate concrete box beam is convenient in construction, the quality is good, and the benefit is high.
Description
technical field [0001] The invention relates to the technical field of bridge construction, in particular to a rotatable flange plate concrete box girder and a construction method thereof. Background technique [0002] In the construction of high-speed railway bridges, prefabricated single-box concrete simply-supported box girders are widely used. After the single-box concrete simply-supported box girders are prefabricated in the prefabrication plant, they are sent to the construction site by beam transport vehicles for erection. However, when the box girder is transported, it is often affected by obstacles on the path, and the plan cannot be implemented smoothly. For example, when the railway line section under construction is located in a mountainous area, due to the large number of tunnels, prefabricated girder factories cannot be installed between some tunnels, so that the prefabricated integral box girder cannot be transported through the existing tunnels because it is ...
Claims
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IPC IPC(8): E01D19/00E01D21/00E01D2/04
Inventor 柏华军王新国黎曙文史娣翟润奇吴斌陈晓辉
Owner CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP